PED-Positive Submissions: Another Record Increase Set in US

Sun, 02 Feb 2014

US - The total number of swine accessions and diagnostic case submissions testing positive for the Porcine Epidemic Diarrhoea (PED) virus now stands at 2,692, writes Jackie Linden. The increase in the number of swine samples testing positive for the virus has set another new record for the latest week.

By farm class, this figure for the total number of positive laboratory swine accessions/diagnostic case submissions as follows between the weeks of 15 April and 19 January: suckling, 542 (+31); nursery, 522 (+34); grower/finisher, 764 (+51); sows/boars, 271 (+11) and 631 (+90) unknown. The total is up 215 from the previous week.

No states have reported a first positive test results in the last week and so the total number of states remains at 23. Those states with 20 or more positive tests are: Iowa, 1,006; North Carolina, 352; Minnesota, 346; Oklahoma, 286; Kansas, 169; Illinois, 120; Ohio and Indiana, 83; Colorado, 41; Texas, 34; Pennsylvania, 32; Missouri, 29 and Michigan, 21.

For the most recent week, Iowa again leads the 'league table' in the number of new positive results, accounting for 68 of the total of 215 new cases, followed by Minnesota with 51 and illinois with 21.

Of the 215 new cases attributed to a production phase, 51 were in grower/finishers, 34 in nurseries and 31 in suckling piglets with 11 in sows/boars. Ninety samples were classified as "unknown".

In mid-June, the reporting system was adjusted. For the weeks prior to 16 June, laboratories were able to provide diagnostic case submissions as well as the number of premises testing positive for the PED virus (PEDv). Since 16 June, the data refer only to diagnostic cases submissions ('swine accessions').

From the week of 16 June to that of 19 January, the total number of biological (swine) samples testing positive is 8,541 - up 786 from the previous week and another record-breaking weekly increasese. The most-affected states by this measure are: North Carolina, 2,331; Iowa, 1,910; Oklahoma, 1,058; Minnesota, 824; Kansas, 726; Illinois, 609; Ohio, 261; Missouri, 146; Colorado, 142; Texas, 118; Indiana, 105 and Pennsylvania, 92. Other states, where positive, reported 50 positives or fewer.